Cubes with: 1 digit → 1 to 7³ = 343 (i.e. 1, 8) 2 digits → 4³ = 64 to 9³ = 729 3 digits → up to 9³ = 729 We observe fewer cube numbers compared to square numbers ...
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The possible last digits of cube numbers are: 0, 1, 4, 5, 6, 7, 8 and 9. Cubes never end with the digit 2 or 3. This pattern helps identify whether a number could be a cube based on its ...
No, 156 is not a perfect square. Its prime factorisation is 2 × 2 × 3 × 13. The factors cannot be paired equally. Since 13 is unpaired, 156 cannot be written as a product of equal numbers. So, not ...
1156 is a perfect square. Its prime factorisation is 2² × 17². All factors are in pairs. But 2800 = 2⁵ × 5² × 7, which has unpaired 2s and a 7, so 2800 is not a perfect square. Class 8 ...
Yes, 324 is a perfect square. Its prime factorisation is 2 × 2 × 3 × 3 × 3 × 3. These can be grouped into two equal groups. So, 324 = 18 × 18 and its square root is ...